Summary
Chan Wing Yan, a young police officer, has been sent undercover as a mole in the local mafia. Lau Kin Ming, a young mafia member, infiltrates the police force. Years later, their older counterparts, Chen Wing Yan and Inspector Lau Kin Ming, respectively, race against time to expose the mole within their midst.
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Cast
Tony Leung
Chan Wing Yan
Andy Lau
Lau Kin Ming
Eric Tsang Chi-Wai
Hon Sam
Anthony Wong Chau-Sang
Wong Chi Shing
Kelly Chen
Lee Sum Yee
Sammi Cheng Sau-Man
Mary
Elva Hsiao Ya-Hsuan
May
Chapman To Man-Chat
Silly Keung
Gordon Lam Ka-Tung
Inspector B
Shawn Yue Man-Lok
Young Chan Wing Yan
Edison Chen
Young Lau Kin Ming
Berg Ng Ting-Yip
Senior Inspector Cheung
Wan Chi-Keung
Officer Leung
Dion Lam Dik-On
Del Piero
Tony Ho
Suspect
Courtney Wu
Stereo Shop Owner
Hui Kam Fung
Cadet School Principal Yip
Chaucharew Wichai
Paul
Au Hin-Wai
Elephant
Lee Tin-Cheung
Double 8
Benjamin Yuen Wai-Ho
CIB Team
Wong Chi-Wang
CIB Team
Addy Sung Gam-Loi
CIB Team
Tam Kon-Chung
CIB Team
Che Jan-Bong
CIB Team
Simon Yu Sai-Tang
Sam's Follower
So Wai-Nam
Sam's Follower
Leung Ho-Kai
Sam's Follower
Terry Lee Ji-Ming
Sam's Follower
Chow Pok-Foo
Sam's Follower
Simon Cheung Yuk-San
Cadet School Instructor
Chang Kin-Yung
Policeman